Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f79dcc0e9d3add96ece55bf4447830f58c436e496b72f83de5795cbd5e0eab85' 
  AND token = 'cgdqEpMzqlosd0kK32b+TsT8MRV9Upk1YQwkk1F67l0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}